Electrical-ignition device



Dee; 21, 1926s.

J.-F|sHER-H1NNEN ELECTRICAL IGNITION DEVICE File@ March 25, 1920 /12 Ven for: -J/W wwmllll Patented Dec. 21,

UNITE. SIA'E FFICE.

JACQUES FISCHER-HINNEN, 0F OERLIKON,

ZURICH, SWITZERLAND, ASSIGNGR T0 THE ELECTRICALJGNITIGN DEVICE.

Application filed March 25, :raadsel-iai No.

My invention consists in an igniting apparatus which can be directly driven by the motor and is provided with means to vary the resistance and vary the relativ-e displacement of the primary interruption with respect to the position of the driving shafts.

In the accompanying drawing,

Fig. 1 is a diagram of an ignition system according to my invention.

Fig. 2 is a sectional view of. my improved ignition device.

Fig. 3 is a detail transverse sectional view of the same.

In the diagram, Figure l, which represents my improved system M is the generator, T the voltage transformer, C a condenser, U the breaker, V the high tension distributer, r a series-resistance oiering the greatest resistance of the primary circuit, and L the primary coil. The greatest part of the resistance, in the special series-resistance 7, is short circuited when started by the crank and is inserted only with the rising of the numb-er of revolutions, the cutout means being indicated at u.

An example of the construction of the apparatus is shown by Figure 2. U represents the breaker and in this case it is formed as a drum on which a brush B bears and effects sliding contact.

The breaker U is rigidly connected to the distributor V. To actuate the breaker a spindle S is providedwhich is driven by means of a worm and a worm wheel D from a shaft P. Shaft P may be the crank or cam shaft ofan explosion motor to which the ignition device is an accessory. To time the breaker U use is made of a governor act-` ing under centrifugal force. On a disk A two bodies G are pivotally mounted as at g. The disk A is connected to the breaker U by means of a pin N, N and the bodies G abut with noses O on abutments of a carrier disk R fixed on the spindle S. When the bodies G move outwardly by centrifugal force an accelerated motion is given to the-breaker 363,734, and in Switzerland March 25. 1919,51

U in relation to the spindle S by means of the pin N. The ignition device adjusts it self automatically to the speed of the motor. A further adjustment is possible by turning the portion H in the casing K.

In `order to obtain an automatic adjusting of the series resistance 1^ I place the latter in the interior of the breaker itself and the displacement of the breaker U in relation to the spindle S is used for short circuiting and switching on the resistance by means of the Contact spring F.

'Ihe apparatus needs a fixed relation between the angle of advance and the number of revolutions. As the centrifugal force rises in the square of the speed of the moving masses the required relative proportion between number of revolutions and angle of advance is obtained in the described apparatus by varying the resistance and varying the relative displacement of the primary interruption with respect to the positionof the driving shafts S and P.

While I have described what I believe to be the best mode of carrying my invention into commercial use, I do not confine myself to the details, as they may be modified without departing from the spirit of the invention.

Having now described my invention what I claim as new, and desire to secure by Letters Patent, is:

An electric ignition device having primary and secondary windings comprising in combination means for automatically timing the ignition and means for attaining constant ignition voltage by varying the electrical resistance in the primary oscillatory circuit and comprising a spindle, a carrier fixed to said spindle, a centrifugally acting breaker, a distributor and a series resistance on said carrier and means to vary the position of said carrier on said spindle.

In testimony whereof I aflix my signature.

JACQUES FISCHER-BINNEN. 

